package com.jxm.security.config;

import com.jxm.security.filter.JwtAuthenticationTokenFilter;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.security.authentication.AuthenticationManager;
import org.springframework.security.config.annotation.web.builders.HttpSecurity;
import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;
import org.springframework.security.config.http.SessionCreationPolicy;
import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
import org.springframework.security.crypto.password.PasswordEncoder;
import org.springframework.security.web.AuthenticationEntryPoint;
import org.springframework.security.web.access.AccessDeniedHandler;
import org.springframework.security.web.authentication.UsernamePasswordAuthenticationFilter;

/**
 * @Author: jxm
 * @Description:
 * @Date: 2022/5/24 21:37
 * @Version: 1.0
 */
@Configuration
public class SecurityConfig extends WebSecurityConfigurerAdapter {

    @Autowired
    JwtAuthenticationTokenFilter jwtAuthenticationTokenFilter;
    @Autowired
    AccessDeniedHandler accessDeniedHandler;
    @Autowired
    AuthenticationEntryPoint authenticationEntryPoint;

    @Bean
    public PasswordEncoder passwordEncoder(){
        return new BCryptPasswordEncoder();
    }

    @Bean
    @Override
    public AuthenticationManager authenticationManagerBean() throws Exception {
        return super.authenticationManagerBean();
    }

    @Override
    protected void configure(HttpSecurity http) throws Exception {

        http    //关闭csrf
                .csrf().disable()
                //不通过Session获取SecurityContext
                .sessionManagement().sessionCreationPolicy(SessionCreationPolicy.STATELESS)
                .and()
                .authorizeRequests()
                //对于登录接口，允许匿名访问
                .antMatchers("/user/login").anonymous()
                //除上面外的所有请求全部需要鉴权认证
                .anyRequest().authenticated();
        //设置过滤器优先执行
        http.addFilterBefore(jwtAuthenticationTokenFilter,UsernamePasswordAuthenticationFilter.class);
        //配置自定义异常处理器
        http.exceptionHandling()
                //认证处理器
                .authenticationEntryPoint(authenticationEntryPoint)
                //授权处理器
                .accessDeniedHandler(accessDeniedHandler);
        //允许跨域
        http.cors();
    }
}
